1 <?xml version=
"1.0" encoding=
"UTF-8"?>
2 <!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd">
3 <!-- saved from url=(0013)about:internet -->
4 <?xml-stylesheet type=
"text/xsl" href=
"mathml.xsl"?><html xmlns=
"http://www.w3.org/1999/xhtml" xmlns:
pref=
"http://www.w3.org/2002/Math/preference" pref:
renderer=
"mathplayer-dl"><head><meta http-equiv=
"Content-Type" content=
"text/html; charset=UTF-8" /><link rel=
"stylesheet" type=
"text/css" href=
"opengl-man.css" /><title>glClearBufferSubData - OpenGL
4 Reference Pages
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.69.1" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"glClearBufferSubData"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glClearBufferSubData — fill all or part of buffer object's data store with a fixed value
</p></div><div class=
"refsynopsisdiv"><h2>C Specification
</h2><div class=
"funcsynopsis"><table border=
"0" summary=
"Function synopsis" cellspacing=
"0" cellpadding=
"0"><tr><td><code class=
"funcdef">void
<b class=
"fsfunc">glClearBufferSubData
</b>(
</code></td><td>GLenum
</td><td><var class=
"pdparam">target
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">internalformat
</var>,
</td></tr><tr><td> </td><td>GLintptr
</td><td><var class=
"pdparam">offset
</var>,
</td></tr><tr><td> </td><td>GLsizeiptr
</td><td><var class=
"pdparam">size
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">format
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">type
</var>,
</td></tr><tr><td> </td><td>const void *
</td><td><var class=
"pdparam">data
</var><code>)
</code>;
</td></tr></table></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"parameters"></a><h2>Parameters
</h2><div class=
"variablelist"><dl><dt><span class=
"term"><em class=
"parameter"><code>target
</code></em></span></dt><dd><p>
5 Specify the target of the operation.
<em class=
"parameter"><code>target
</code></em> must be
6 one of the global buffer binding targets.
7 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>internalformat
</code></em></span></dt><dd><p>
8 The internal format with which the data will be stored in the buffer object.
9 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>offset
</code></em></span></dt><dd><p>
10 The offset, in basic machine units into the buffer object's data store at which to start filling.
11 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>size
</code></em></span></dt><dd><p>
12 The size, in basic machine units of the range of the data store to fill.
13 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>format
</code></em></span></dt><dd><p>
14 The format of the data in memory addressed by
<em class=
"parameter"><code>data
</code></em>.
15 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>type
</code></em></span></dt><dd><p>
16 The type of the data in memory addressed by
<em class=
"parameter"><code>data
</code></em>.
17 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>data
</code></em></span></dt><dd><p>
18 The address of a memory location storing the data to be replicated into the
20 </p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>
21 <code class=
"function">glClearBufferSubData
</code> fills a specified region of a buffer object's
22 data store with data from client memory.
<em class=
"parameter"><code>offset
</code></em> and
<em class=
"parameter"><code>size
</code></em>
23 demark the extent of the region within the data store of the buffer object bound to
24 <em class=
"parameter"><code>target
</code></em> to fill with data. Data, initially supplied in a format
25 specified by
<em class=
"parameter"><code>format
</code></em> in data type
<em class=
"parameter"><code>type
</code></em> is
26 read from the memory address given by
<em class=
"parameter"><code>data
</code></em> and converted into
27 the internal representation given by
<em class=
"parameter"><code>internalforamt
</code></em>.
28 This converted data is then replicated throughout the specified region of the buffer object's
31 If
<em class=
"parameter"><code>data
</code></em> is NULL, then the subrange of the buffer's data store
33 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>
34 <code class=
"constant">GL_INVALID_ENUM
</code> is generated if
<em class=
"parameter"><code>target
</code></em> not one of the generic buffer binding targets.
36 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if no buffer is bound to
<em class=
"parameter"><code>target
</code></em>.
38 <code class=
"constant">GL_INVALID_ENUM
</code> is generated if
<em class=
"parameter"><code>internalformat
</code></em> is not a sized internal format.
40 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>offset
</code></em> or
<em class=
"parameter"><code>range
</code></em> are not multiples of
41 the number of basic machine units per-element for the internal format specified by
42 <em class=
"parameter"><code>internalformat
</code></em>.
44 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>offset
</code></em> or
<em class=
"parameter"><code>size
</code></em> is less than zero, or if
45 <em class=
"parameter"><code>offset
</code></em> +
<em class=
"parameter"><code>size
</code></em> is greater than the value of
<code class=
"constant">GL_BUFFER_SIZE
</code> for the buffer bound to
<em class=
"parameter"><code>target
</code></em>.
47 <code class=
"constant">GL_INVALID_OPERATION
</code> is generated if any part of the specified buffer range is
48 mapped with
<a href=
"glMapBufferRange.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glMapBufferRange
</span></span></a> or
<a href=
"glMapBuffer.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glMapBuffer
</span></span></a>.
49 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p>
50 <a href=
"glClearBufferData.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glClearBufferData
</span></span></a>.
51 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
52 Copyright
<span class=
"trademark"></span>©
2012 Khronos Group.
53 This material may be distributed subject to the terms and conditions set forth in
54 the Open Publication License, v
1.0,
8 June
1999.
55 <a href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
56 </p></div></div></body></html>